Metal-working machine.



G. T. WARWICK.

METAL WORKING MACHINE.

APPLICATION FILED FEB. 27. 1913.

Patented Dec. 14, 1915.

9 SHEETS-SHEET 2- V IN VENTOR. 5601:761 Minn 2713 lV/TNESSES:

ATTORNEY.

" UMIJIA PLANOORAPH CID-,WASHINGTON. D. 1:.

G. T. WARWICK.

METAL WORKING MACHINE.

APPLICATION FILED FEB. 21. 1913.

Patented Dec 14, 1915.

9 SHEETS-SHEET 3 LVVENTOR. [60196 WZZru/(ck;

WITNESSES.-

ATTORNEY.

COLUMBIA PLANOGRAPH c0. WASHINGTON, D. c

G. ,T. WARWICK.

. METAL WORKING MACHINE.

APPLICATION FILED FEB. 27. 1913. 1,163,961. Patented Dec.14,1915.

9 SHEETS-SHEH 4.

WITNESSES."

fd. 222 Mia/ 9 i G. T. WARWICK.

METAL WORKING MACHINEx APPLlCATlON FILED FEB. 2?. 1913.

Patented Dec. 14, 1915.

9 SHEETS-SHEET 5.

IVITNESSES:

ATTORNEY.

COLUMBIA PLAYOGRAPH '20.,WASH1NGTON. 11:,

' G. T. WARWICK.

METAL WORKING MACHINE.

APPLICATION FILED FEB. 27 I9l3.

Patented Dec. 14, 1915.

9 SHEETS-SHEET 6 N Raw w. m m J 9 "a 0 m 9, 1 n %w x f m 7/ x a M. WHHHHWLLEM my. m r 42225 7F: F: u fiw umW f @w w z w h .w m I H m &/\)\

MMWW. CWT KW G. T. WARWICK.

METAL WORKING MACHINE. APPLICATION FILED FEB. 21. 1913.

1,163,961, 7 I Patented Dec.14,1915.

9 SHEETS-SHEET 7 WITNESSES: INVENTOR.

BY r/7 JY/i/ ATTORNEY.

G. T. WARWICK.

METAL WORKING MACHINE.

APPLICATION FILED FEB. 27. l9l3.

Patented Dec. 14, 1915.

9 SHEETS-SHEET 8.

l I 1 l ATTORNEY.

COLUMBIA PLANOURAPH C0.,WASHXNGTON, D. c

G. T. WARWICK.

METAL WORKING MACHINE.

APPLICATION FILED FEB. 21. m3.

1 1 63,961 Patented Dec. 14, 1915.

9 SHEETS-SHEET 9- XV. Z2, Gearye T Vlzrzaz'c/E, A BY A TTORNE Y.

COLUMBIA PLANOORAPH (JO-,WASHINGTON. n. c.

' iinrrn sear s arena onnren.

GEORGE r. WARWICK, on SPRINGFIELD, massacnnsnrrs, 'AssIenon T0 INTER- NATIONAL MACHINE AND scnnw COMPANY, or SERINGFIELD, MAssAcrrU- SETTS, A CORPORATION OF MAINE.

' Specification of Letters Patent.

Patented Dec. 1%, 1915.

Original application filed April 21, 1910, Serial No. 556,842. Divided and this application filed February 27, 1913. Serial No. 751,033.

T0 all'whom it may concern Be it known that I, Gnoacn T. WARWICK, a citizen of the United States of America. and resident of Springfield, in the county of Hampden and State of Massachusetts,

have invented certain new and useful Improvements in Metal-Working Machines, of which the following is a full, clear, and eX- act description.

This invention relates to metal working machines, and more particularly to that class thereof which'ai'e employed for the purpose of forming blanks for screws, the blanks being cut from a roll of wire, the diameter of the latter being substantially equal to the head of the screws or blanks, the shank portions of which are reduced by compression of the stock through a series of successive operations.

The invention has for one of its objects, the provision of an improved machine of this character in which a number of blanks are operated upon at thesame time. or in other words: a single machine in which the several successive steps or operations are simultaneously performed on a series of blanks.

The invention has, furthermore, for its obiect the mo ision. in combination with the cutting-off and end-forming mechanism, of

means whereby the blank may be reduced at the shank port on thereof in a gradual manner. so that little. if any. subsequent finishing orscuaring-off is necessitated.

Further obiects of the invention will hereinafter appearand the means of their attainment be particularly pointed out in the claims.

The invention has been clearly illustrated inthe accompanying drawings in which simi a characters denote similar parts, and in which- Figure 1 is a plan or top View of a machine embodvin my invention. Fig. 2 is a vertical cross section on line 2 2 indicated in Fig. 1 and looking toward the left of said figure. Fig. 3 is a similar section on line 3. 3 of Fig. 1 looking in the same di rection as Fig. 2. Fig. 4: is a similar section online 4. 4i (substantially the same as 5, 5) but looking toward the pulley end of the machine or toward the right of Fig. .1. Fig. 5 is a vertical section online 5, 5 of Fig. 1

looking toward the left of said figure. Fig. 6 is a. vertical cross section of the stock feedlngnieans and also the device whereby the stcck is held against retrograde move ment during the return stroke of the feeding-in means. F i927 is a longitudinal section through the b1ank-carrying chuck and the mechanism whereby the blank is ejected in substantially finished condition. Fig. 8 illustrates in detail one set of the cooperative dies whereby the shank portion of the blank is reduced. Fig. 9' is-a central section of the device which carries the shank-reducing mechanism. Fig. 10 illustrates the means whereby the reducing rolls may be adjusted relatively to each other so as to produce shanks of different diameters. Fig. 11 shows in side elevation and end view,

the blank in its successive stages of engagementby the dies.

Referring at first to the general construction or assemblage of the machine, as a whole, (see Fig. ll. the numeral 25 denotes a bed-plate on which the several elements are mounted! The driving-pulley 26 is disposed on the right hand end of the machine, and power may be imparted thereto from any convenient source. The pullev 26 is mounted on and rotates the shaft 27 which extends from end to end of the bed 25. and carries at its other end a pinion 28 and also a hand-wheel 29 whereby the shaft 27 may be manually rotated when required. The pinion 28 is in engagement with a gear 30 secured upon the main cam-shaft 31 which constitutes the controlling and timing element for operating the several mechanisms and devices of which the machine is composed.

At the right hand end of the bed 25 is disposed the feeding-in mechanism for the stock which is driven from the cam-shaft 31 b means of a cra k-disk carrying a crank-pin 33 connected by a p tman-rod 34: with a rack-bar 35 which is uided for recinrocatory mo ement in a b cket 36 secured to the end of a bed-plate 25 and which is also provided with bearings 37 in which a shaft 38 is rotatably mounted. Secured to this shaft, is a gear 39 which is in constant; engagement with the teeth of the rack-bar 35 so that when a reciprocatory movement. is imparted to said rack-bar, an

is pivoted at 85.

oscillatory movement will be imparted to;

the gear 39 and consequently to the shaft 38. Secured to the upper end of the shaft 38 is a'crank 1-0 connected by a pitman-rod' ll with the slide on which the stock-grippers or feeders are. mounted. v

After passing the feeding mechanism, the elements of which may be of any desired construction, the stock or wire passes through a device whereby any return movement of the stock during the retrograde movement of the feed-slide will be prevented; but inasmuch as the present invention does not deal with tlns feature of the machine, detailed description of the same is dispensed with, the present mechanism being also fully shown an'd'described in a contem'poraneously-pending application, S. N. 556,842, to which reference may be had. The next step which takes .place after the stock has been fed forward, is that of cutting-off from the stock alength correspond ingto the blank to be formed, the cuttingoff mechanism being alsoof any desired construction, and comprising a pair of toggle levers 83, 8t, (see F ig. 4) thelatter of which The upper end of the togglc-arm '83 (see Fig 6) is articulated to the cutter-slide 90 to cut from the stock S a blank B and subsequently raise the same into position opposite adevice whereby the blank is pushed out of the slide into position between a pair of rollers 93, '94 whereby the substantially square ends of the blank B will be burred and rolled into rounded form when the blanks are to be madeinto machine screws or into'tapered, or pointed form when the blanks are to be made into wood? screws,-interchangeable rolls, of course, being emploved.

Means are provided whereby each blank,

as it is entered b tween the burring-rollers,

is supported in its position to be engaged and rolled by the latter. These means consist of a pair of guardplates.121, 122. disposed above and below the line of rolling contact between said burring-rollers (see Figs. l and 6),, these guard-plates being attached to a standard 99 and having their ad jacent ends shaped so as to properly inclose the blank at points vertically diametrically to each other.

The mechanism whereby each blank after it has been cut ofi from the stock is trans formed from the cutter-slide to its points of rest between the hurling-rollers, or more particularly speaking. between the guardplates 121, 122 is clearly illustrated in Figs. 1,5and6, Referring first to Fig. 6, it will be seen that the cutter-slide is in its lowermost position, so that when the cutter-camj is opcra ted, the blank will be transferred by the cutter-slide into alinement with the opening between guard p'lates 121, 122, and also in alinement with an ejector device shown here- 1n as a push-rod 123, the forward'end of which is provided witha pushenpin 12l 0f such size as to, jreadi ly pass, between the.

guard-plates 121,122. flhe other end of the ejector-rod 123 carries agrooved-spool i 125 which is engaged by" the bifurcated end.

of an actuating-lever 1126 which is' ful-" 'crmned at127 on a standard projecting upward from the bed 25, and the other endof which is connected by a link 128 with a camlever 129, which lattereis pivoted at 130 on the bed-plate 25. and carries at, its forward end a roller 131 traveling within a groove 132 of the ejector-cam 133 which is secured to the main cam-shaft 31. It may be stated here that both hurling-rollers are so constructed that atthe proper time the blank 7 may not only be injected from one side of said burring-rollers, but, furthermore, that said blanks may be ejected therefrom at the proper time and into devices .whereby further action onthe blank as to the swaging of the shank may takejplace. Hence, it will be understood that the.;injector-rod 123 has in reality two functions t'i'irst, to inject the blank fromthe cutter-slide into position between the' burring-rollers, and to eject the. rolled blankfrom the burring rollersinto one of a number of chucks which pass. in

front of said bur ing rollers and whereby successive blanks are taken from said rollers and transferred to a series of progressively. operative swagingdevices whereby the shank of the blank is properly reduced.

rleferring now to Figs. 1 and. 5 which 7 represent vertical seetionsthrough the machine at substantially the same line, but

looking in opposite directions, it will be. nc-tedthat a housing 134 is secured to the top of the bed, which housing contains a into connection with the swaging-devices, 7 the latter are placed equidistantly apart in the manner shown. Inthe presentinstance five of these swagmg or reducing devices are illustrated, the first one of which brings the shank of the blank into the shape illustrated byoA (see Fig. 11); the second one rounds the blank again'into shape. as, shown at the third device renders the shank elliptical in cross section as shown at C; the fourth b ings it again into rounded form, and the fifth reduces'the' shank'to its 'finish ed size Work.

by very slight compression on the shank shown at v The operation of the swaging-devices has been clearly shown in Figs. 8 and 9, of which Fig. 8 represents the swaging-device ready to start, and Fig. 9 illustrates the same in position after it has completed its It should be remembered that the several swaging-devices above referred to are substantially the same in general con struction and operation, the only dilference between thembeing the shape of the swaging tools or dies which are made so as to correspond to the different shapes of the shank required by the several operations,

respectively.

.Referring first to Fig. 9 in which the general organlzation and actuating mechanism of the devices in con unction therewith is shown, the numerals 135, 136 denote engagement with pinions 141, 142, respectively. the latter being secured on spindles 143, 144 also journaled Within the housing 134, the gears 141, 142, however, being in mesh, so that when one of said pinions is operated, the other one will also be rotated but in a reversed direction.

The body of the pinion 141 has an extension 145 to which is articulated, as at 146, a link 147 which connects the arm 145 with a slide 148 mounted for horizontal movement on an extension 149 secured to, or forming a part of, thehousing 134. It will, therefore, be seen that by moving the slide 148 toward the right and into position shown in Fig. 9, the pinions 141, 142 will be rotated from the position shown in Fig.8 to that shown in Fig. 9 and consequently, the swaging-dies 137, 138 will also have been rotated to compress or swage the shank of the blank between them, at the same time moving the latter longitudinally with its holding device. i

Means are provided for properly and timely actuating the slide 148, these means consisting substantially of a swaging-cam 150 (see Fig. 1) secured to the main camshaft 31 and having a groove 151 to receive a'cam-roller 152 which is pivoted on the end of a lever 153. This lever is fulcrumed on a stud 154 secured to the bed 25 of the machine, and its other end is connected with the slide 148, by means ofa link consisting in its preferred form of a pair of butt-ends 155, 156 which are screw-threaded right and left hand, and connected by a turn-buckle 157 to obtain a fine adjustment as to the movement of the slide 148 and its resultant rotation of the pinions 141, 142.

Means are provided whereby the distance between the rolling axes of the swagingdies may be varied so as to accommodate blanks of different diameters and also to precisionize the size of the blank-shanks, these means being illustrated in detail in Fig. 10 in which it will be noted that the ends of the spindles 135, 136 are journaled in eccentric bushings 135, 136 provided with slotted fiange-portions through which clamping-bolts 135", 136 may pass to hold said bushings rigidly in their adjusted positions. By virtue of this adjustment, it will also be noted that the swaging-dies may be located so as to come into exact central alinement with the blank-carrying chucks on the carrier, or that, in other words :the blank in the chuck will come into position with its axis exactly halfway between the adjacent moving faces of said dies. 7

Disposed concentrically with the several swaging-devices, and journaled in a bearing (see Fig. 9) which is secured to the housing 134, is a shaft 159 which constitutes the medium. whereby the several blank-receiving chucks are carried into cooperation with the several swaging-devices, these chucks being mounted upon a carrier or spider which constitutes a transfer device for the blanks, and which is movable longitudinally of its axis to permit movement of the blanks with the swaging dies during the rotative movements thereof, and which is taken advantage of also to eject'the finished blank from its chuck or holder at a particular point of its travel around the aXis of the shaft 159.

The construction of the blank-receiving chucks and their supporting spider or car rier is clearly illustrated in Figs. 1, 3, and 7. Referring at first to Fig. 3, it will be seen that the present chuck-carrier supports eight chucks 160 which are-preferably of the spring-pressed variety (see Fig. 7) and have a longitudinal rod 161 extending therethrough to serve not only as a medium against which the inner end, or more particularly the head portion thereof, will abut so as to leave the shank-portion of the blank projecting for the required distance beyond the end of the chuck, but will also act as a means whereby the finished blank will be ejected therefrom at the proper time. Again referring to Fig. 3, the station where blanks are entered into the successively arriving chucks is indicated by numeral 1.

The first swa in or reducin oaeration 13 takes place at station 11. The next swaging or roundlng operation takes place at station -III.' The next swaging or flattening operation takes place at station IV. The final rounding of the shank takes place at station V,-

takes place at station VI. The blank is discharged or e ected from lts'chuck at station VlL'it being understood that every time any particular chuck arrives at any one of thestations just enumerated, the carrier stops long enough in its rotation to permit proper action of the swaging-derices, or the injecting mechanism, or the ejecting mechanism. From the foregoing, it will be understood that the rotative movement of the carrier is really intermittenh'and I accomplish this result by a star-wheel-andcrank mechanism such as is'clearly shown in Fig. 2.

The 159 is, as above stated, journal-3d in a hearing-158, and, it is also supportedv in abearing secured to the bed and in which hearings, the shaft 159 is not only rotatable hut also movable longitudinally for purposes hereinafter set forth. The carrier or transfer mechanism comprises as one of its elements a. spider 163 which is rigidly secured to the shaft 159 and which is provided with a series of bearings 16% within which the blankq'eceiving chucks 160 are rotatably held, while the rods 161 thereof project rearwardlyinto bushings 165 which are adjustably supported in a ring or annulus 166 which is properly distanced andpositioned relatively to the spider 1653, as for instance by the spacer-bolts 167. It will, therefore, be understood that when the shaft 159 is moved longitudinally in its bearings, said carrier or spider 163, together with the annulus 166, will be moved therewith. Now, the organization of the chucks, as far as their rotation is concerned, is such that as each chuck travels from one station r to the next one, the chuck is rotated 90 degrees, so that when the swaging-devices operate on the shank of the blank in the chuck, the results illustrated in connection with Fig. 11. will be obtained. The mechanism for imparting these quarter turns to the chucks is clearly shown in l-ig. 3, in which it is seen that each chuck has a gear 168, the adjacent pairs of which are in engagement with intermediates 169 journaled on studs 1Y0 which are rigidly held in the spider grooves 1'73 adapted to be successively engaged by a roller 17st carried onrthe free end of a crank-arm 1'15 W'lllOlilS rigidly .se-

cured on a shaft-17 send. the.lilih'iof which and the finishing operation is properly shaped to engageecesses 17% disposed between the actuating grooves and serving "as a means for locking thestarwheel against. movemcnt'ivhen ,the crankpin roller-17 i is-out of engagement therewitlL- The shaft 176 is journaled in. a hearing formed on the bracket which supports the bearing162, and it also finds a support in another bearing 189 secured to the bedplate interposed between these hear-- ings, and held against longitudinal movementwith the shaft 176, is a bevielsgear 1 81 which has a key connection with said shaft to permit the latter to slide through the same at the time whenthe shaft 159 is shiftedlongitudinally, both shafts being connected hvan arm 183 inthe manner shown, in

Fig. .1 the shaft, together with the carrier and other componenteleinents, is illustrated in its extreme forward position; The purpose of this shifting movement .i's' to .move the chucks with the blanks contained therein to correspond to the action of the swag ing-devices, and also to maintain the inter? mediate dr' ing mechanism in proper corre lat-ion to the spider, as welllas tov effectthe" proper operation of the eiecting mechanism which latter comprises in the present instance a stationary member (see Fig. 7) in screw-threaded engagement with apart of the bed 25, 'sothat proper adjustment may be had thereof, and it will actuate the ejector-rods 161 as illustrated in that figure to eject the blank at'station VII, the bed 25 being cut away at this place in the manner shown in Figs. 2 and 8.

The means for shifting the shafts 159 and 176 consists substantially of a spool 185 having a groove 186' engaged by the forked end of alever 187, said spool being preferably 5 screwthreaded on the shaft 159'to permit the proper positioning thereof, so as toinove the shaft 159 and the-chucks carried thereby into proper position. The lever 1'82 (see Fig. 1) is fulcrumed 188 on the bed 25 and its end is connected by alink 189 with a cam-lever 1.90 which carries at its forward end. a roll 191 riding in a cam-gro0ve192 provided in the shifter earn 193 which is secured to the cam-shaft 31, above described.

The shaftr 176 is continuously?rotated:

through the gear 181, above mentioned, which 1s-1n engagement with a 'bevel pinion 194 secured'at the end ofa transverse shaft position, the stock may be entered into the slide for the required amount by the feeding mechanism, whereupon the slide is moved vertically to bring the cut-off blank into alinement with the space between the guard plates 121, 122. The injector-rod 123 then advances with the pusher-pin 12% which latter pushes the blank between the burringrollers whereby the ends of the blank are operated upon. As soon as this operation has been completed and the cutter-slide has been retracted, the injector-rod 123 again advances, forcing the barred blank from between the burring-rollers and into the chuck which has arrived at that point. The carrieris then rotated finally to bring the blank into position opposite station 11 at which point the shank is operated upon by the first set of swaging-dies to form the same into elliptical cross section, as shown at A in Fig. 11, the carrier during this operation moving slightly rearward in correspondence to the section of the swaging-devices. lhe blank is now clear so that the carrier can again be rotated to bring the blank into alinement with the swaging devices located at station III, while at the same time it has been turned axially for 90 degrees, so that the swagingdevices at this station will compress the shank at points disposed at right angles to that of the first set. The blank is then transferred to station IV where the blank is again swaged into elliptical form, but smaller than at station H. By the next movei'nent of the carrier the blank is carried to station V where the elliptical shankwill be again reduced into a round form similar as at station 111, but having a smaller diameter, and finally the blank is transferred to station V1 where the finishing dies complete the blank, at which time theformerly rounded shank-end has become practically squarefaced at its end by virtue of the stretching or lengthening process which the outer surface of the shank has undergone. The'next partial rotation of the carrier will bring the blank from station ,VI to station VII at which point the stationary ejector abutment 18l is disposed, so that when the carrier in its entirety is drawn rearward by the shiftercam 193, the finished blank will be pushed out of its chuck whence it will fall onto the inclined surface of the bed 25 at that point,

and from there drop to the floor or into suitable box provided for that purpose.

The above explains the operation as far as one blank is concerned, and it will, of course, be understood, that each other chuck of the series will receive a blank and subject it to the same identical operations as the one described.

Many changes may be made in the construction and organization of the several component elements of the machine, without departing from the spirit of the invention, and I wish it distinctly understood that I do not confine myself, except so far as required by the scope of the claims, to the employment of the specific operating means for the several devices, the operation of which may be effected in many different ways.

I claim:

1. The combination with a blank-reducing mechanism comprising a series of swaging-devices, of a carrier consisting of a spider, and an annulus and spacers between said spider and annulus, a series of chucks journaledin said spider andannulus, and means for rotating said carrier.

2. The combination with a blank-reducing mechanism comprising a series of swaging-devices, of a carrier comprising a spider, an annulus and spacers between said spider and annulus, a series of chucks journaled in said spider and annulus, and means for shifting the carrier longitudinally.

3. The combination with a blank-reducing mechanism comprising a series of swagingdevices, of a carrier comprising a spider, an annulus and spacers between said spider and annulus, a series of chucks j ournaled in said spider and annulus, and means for shifting the carrier longitudinally of its rotation axis.

4. The combination with a blank-reducing mechanism comprising a series of swagingdevices, of a carrier, a series of chucks held on the carrier, gage-reds in said chucks, adjustable bushings in the annulus for positioning said gage-rods, and means for rotating the carrier.

5. The combination with a blank-reducing mechanism comprising a series of swagingdevices, of a carrier, a shaft for rotatably supporting the same, a crank-shaft for intermittently rctating the carrier-shaft, and means for connecting the carrier-shaft and crank-shaft for lcngitudinal movement.

6. The combinaticn with a blank reducing mechanism comprising a series of swag- 1ng-dev1ces, of a carrier, a series of chucks held in the carrier, an annulus on the carrier, gage rods in said chucks, adjustable bushings in the annulus for positioning said gage rods, and means for rotating the carrier.

7. Thecombination with a blank reducing mechanism comprising a series of swagingdevice's," of a carrier, a series of chucks held in the carrier, gage rods on said chucks, adjustable bushings for positioning the gage rods, and means for rotating the carrier.

8. The combination with a blank reducing mechanism, comprising a series of swaging devices, of a carrier, a series of chucks held in the carrier, an annulus on the carrier, gage rods in said chucks, adjustable bushings'in the annulus for positioning said gage rods 7 and means for shifting bushings in the annulus for positioning said gage rods and means for shifting the carrier longitudinally of its rotational axis.

10. The combination With a blank reducing mechanism comprising a series of swaging devices, of a carrier, a'series' o-fchucks' held inthe carrier, ,an annuluson the carrier, gage rods 1n SilldChllCkS, adyustable bushings in the annulus for positioning said gage rods and means for shiftlng the carrier 7 longitudinally of its rotational axis, I and means for rotating the carrier.

Signed by me at Springfield, in 2a WM. S. BELLoWs, G. R. DRIscoLn.

Copies of this patent may be obtained for five cents each; by addressing the: iiGommissioner oflatents.

Washington, 11 0." V v 7 7 V 

